import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [{
        path: '/login',
        component: () =>
            import ('@/views/login/index'),
        hidden: true
    },

    {
        path: '/404',
        component: () =>
            import ('@/views/404'),
        hidden: true
    },

    {
        path: '/',
        component: Layout,
        redirect: '/dashboard',
        children: [{
            path: 'dashboard',
            name: 'Dashboard',
            component: () =>
                import ('@/views/dashboard/index'),
            meta: { title: '首页', icon: 'dashboard', affix: true }
        }]
    }
]

/**
 * asyncRoutes 需要权限才能访问
 * the routes that need to be dynamically loaded based on user roles
 */
export const asyncRoutes = [
    // {
    //   path: '/system',
    //   component: Layout,
    //   alwaysShow: true,
    //   name: 'system',
    //   meta: { title: '系统管理', icon: 'el-icon-s-help' },
    //   children: [
    //     {
    //       path: '/sysUserList',
    //       name: 'sysUserList',
    //       component: () => import('@/views/system/sysUserList'),
    //       meta: { title: '用户管理', icon: 'table' }
    //     },
    //     {
    //       path: '/sysRoleList',
    //       name: 'sysRoleList',
    //       component: () => import('@/views/system/sysRoleList'),
    //       meta: { title: '角色管理', icon: 'tree' }
    //     },
    //     {
    //       path: '/sysMenuList',
    //       name: 'sysMenuList',
    //       component: () => import('@/views/system/sysMenuList'),
    //       meta: { title: '菜单管理', icon: 'tree' }
    //     }
    //   ]
    // },
    // {
    //   path: '/reader',
    //   component: Layout,
    //   name: 'reader',
    //   alwaysShow: true,
    //   meta: { title: '读者管理', icon: 'el-icon-s-help' },
    //   children: [
    //     {
    //       path: '/readerList',
    //       name: 'readerList',
    //       component: () => import('@/views/reader/readerList'),
    //       meta: { title: '读者列表', icon: 'table' }
    //     }
    //   ]
    // },
    // {
    //   path: '/book',
    //   component: Layout,
    //   alwaysShow: true,
    //   name: 'book',
    //   meta: { title: '图书管理', icon: 'el-icon-s-help' },
    //   children: [
    //     {
    //       path: '/bookCategory',
    //       name: 'bookCategory',
    //       component: () => import('@/views/book/bookCategory'),
    //       meta: { title: '图书分类', icon: 'table' }
    //     },
    //     {
    //       path: '/bookList',
    //       name: 'bookList',
    //       component: () => import('@/views/book/bookList'),
    //       meta: { title: '图书列表', icon: 'table' }
    //     }
    //   ]
    // },
    // {
    //   path: '/borrow',
    //   component: Layout,
    //   alwaysShow: true,
    //   name: 'borrow',
    //   meta: { title: '借阅管理', icon: 'el-icon-s-help' },
    //   children: [
    //     {
    //       path: '/bookBorrow',
    //       name: 'bookBorrow',
    //       component: () => import('@/views/borrow/bookBorrow'),
    //       meta: { title: '借书管理', icon: 'table' }
    //     },
    //     {
    //       path: '/bookReturn',
    //       name: 'bookReturn',
    //       component: () => import('@/views/borrow/bookReturn'),
    //       meta: { title: '还书管理', icon: 'table' }
    //     },
    //     {
    //       path: '/borrowLook',
    //       name: 'borrowLook',
    //       component: () => import('@/views/borrow/borrowLook'),
    //       meta: { title: '借阅查看', icon: 'el-icon-s-cooperation' }
    //     }
    //   ]
    // },
    // {
    //   path: '/notice',
    //   component: Layout,
    //   alwaysShow: true,
    //   name: 'notice',
    //   meta: { title: '公告管理', icon: 'el-icon-s-help' },
    //   children: [
    //     {
    //       path: '/noticeList',
    //       name: 'noticeList',
    //       component: () => import('@/views/notice/noticeList'),
    //       meta: { title: '公告列表', icon: 'table' }
    //     }
    //   ]
    // },
    // // 404 page must be placed at the end !!!
    // { path: '*', redirect: '/404', hidden: true }
]

const createRouter = () => new Router({
    // mode: 'history', // require service support
    scrollBehavior: () => ({ y: 0 }),
    routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
    const newRouter = createRouter()
    router.matcher = newRouter.matcher // reset router
}

export default router